Computed tomographic findings in pelvic cavity after radiation therapy for carcinoma of cervix

ABSTRACT

From July 1, 1981 to August 31, 1984, 59 patients who had radiation therapy for carcinoma of cervix had CTscanning at Departement of Diagnostic Radiology, Kosin Medical College. The authors analysed the CT findings ofthe patients in regard to the recurrence of the disease and postradiation changes. The results are as followings1. The incidence of recurrence was most common in advanced stage over IIb. 77% 2. Changes in pelvic cavity were asfollowings; ; Widening of presacral space 78% ; Increased perirectal fat space 81% ; Symmetrical thickening ofperirectal fascia 97% ; Fibrous connectin between sacrum and rectum 92% ; Anterior conncetion between rectum andperirectal fascia 47% ; Increased bowel wall thickness 44% ; Increased bladder wall thickness with trabeculations51% 3. In most patients who had CT scanning within 3 months after radiation therapy, CT did not demonstratepostradiation changes characterized by an increased pelvic fibrous and fatty tissue. 4. In 10 patients who hadpostoperative radiation therapy, 8 patients show increased bowel wall thickness. 5. 30 patients with recurrentcarcinoma of cervix were as followings; ; Pelvic tumor recurrence 90% ; Parametrial and side wall extension 53% ;Pelvic and paraaortic lymphadenopathy 40% ; Hydronephrosis 23% ; Bladder involvement 23% ; Lumbar spineinvolvement 10% And 1 patient shows distant metastasis to paraaortic lymph node, 1 patient to lumbar spine, and 1patient to liver without recurrent tumor mass in pelvic cavity. 6. 2 patients showing mass wihout other sign inthe pelvic cavity were unable to be differentiated between irradiated uterus and recurrent tumor.